by Charnaya, E V, Mikushev, V M, Shabanova, E S
Published in Journal of physics. Condensed matter (12.09.1994)

by Lefmann, K, Buras, B, Pedersen, EJ, Shabanova, ES, Thorsen, PA, Berg Rasmussen F, Sellschop, JP
Published in Physical review. B, Condensed matter (01.12.1994)